Finding the Fourth Proportional to 1,986,790.47, 2,741,776.11 and 1,127,348.43
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Solution
The fourth proportional to 1,986,790.47, 2,741,776.11 and 1,127,348.43 is: 1,555,743.82
Step by Step Solution
- Step 1: Write the proportion equation
1,986,790.47 : 2,741,776.11 = 1,127,348.43 : x - Step 2: Convert to fraction form
1,986,790.47/2,741,776.11 = 1,127,348.43/x - Step 3: Cross multiply
1,986,790.47x = 2,741,776.11 × 1,127,348.43 - Step 4: Simplify right side
1,986,790.47x = 3,090,936,993,020.01 - Step 5: Solve for x
x = 3,090,936,993,020.01/1,986,790.47 - Step 6: Final answer
x = 1,555,743.82
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.